<template>
    <div :class="{ hidden: hidden }" class="pagination-container">
      <el-pagination
        :background="background"
        v-model:current-page="currentPage"
        v-model:page-size="pageSize"
        :layout="layout"
        :page-sizes="pageSizes"
        :pager-count="pagerCount"
        :total="total"
        :teleported="teleported"
        :size="size"
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
      />
    </div>
  </template>
  
  <script setup>
  const props = defineProps({
    total: {
      required: true,
      type: Number,
    },
    page: {
      type: Number,
      default: 1,
    },
    limit: {
      type: Number,
      default: 20,
    },
    pageSizes: {
      type: Array,
      default() {
        return [10, 20, 30, 50, 100];
      },
    },
    // 移动端页码按钮的数量端默认值5
    pagerCount: {
      type: Number,
      default: document.body.clientWidth < 992 ? 5 : 7,
    },
    layout: {
      type: String,
      default: 'total, sizes, prev, pager, next, jumper',
    },
    background: {
      type: Boolean,
      default: true,
    },
    autoScroll: {
      type: Boolean,
      default: true,
    },
    hidden: {
      type: Boolean,
      default: false,
    },
    teleported: {
      type: Boolean,
      default: true,
    },
    size: {
      type: String,
      default: '',
    },
  });
  
  const emit = defineEmits();
  const currentPage = computed({
    get() {
      return props.page;
    },
    set(val) {
      emit('update:page', val);
    },
  });
  const pageSize = computed({
    get() {
      return props.limit;
    },
    set(val) {
      emit('update:limit', val);
    },
  });
  function handleSizeChange(val) {
    if (currentPage.value * val > props.total) {
      currentPage.value = 1;
    }
    emit('pagination', { page: currentPage.value, limit: val });
  }
  function handleCurrentChange(val) {
    emit('pagination', { page: val, limit: pageSize.value });
  }
  </script>
  
  <style scoped>
  .pagination-container.hidden {
    display: none;
  }
  </style>
  